This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about ustekinumab (Stelara, Stelara PFS)?

You should not use this medication if you are allergic to ustekinumab or if you have received a BCG (Bacillus Calmette and Guérin) vaccine within the past year (12 months).

BCG vaccine should not be given for at least 1 year after you receive your last dose of ustekinumab.

Before using ustekinumab, tell your doctor if you have an active infection, a history of tuberculosis or recurrent infections, high blood pressure, a weak immune system, or if you are receiving phototherapy (light therapy).

Your doctor may perform tests to make sure you do not have tuberculosis or other infections.

Make sure you are current on all vaccines before you start treatment with ustekinumab.

Ustekinumab can make it easier for you to get sick. Avoid being near people who have colds, the flu, or other contagious illnesses.